Belt-controlling device.



FL F. MCFEELY. BELT'CONTRULUNG APPLICATION FILED DEC. 9. i913.

DVICE` Patente Nov. 7, v1915.

IMM $525157.

E@ M2M@ @A lll ` several l rrr" a.

' a belt guiding er t1 readjustment el? the pulleys is RGNALD lll".

,hpplteetleh filed heeember l),

To all jte/ham may mathrm lle .it ltiiewp that L RONALD a eitiaen. et the United States, yllererllwtr, lh t' eerihty el? et lll* seeehr its,y hare :hereplm l l prei llelt-llrmtrellipgg ll 1 "which tee tollewiiilr leserlptiph he connectem Wiltli the accompanying dr speeili era like reference el l the fl a ladieatmd' like parte in the ll, Mehleist'r, eidmg at This stima relates te prever traps aiissiml "'l'lal'liem. and pe n te i'zaeehahr a et thlsielare; ra whieh the power trapsraill-,airp,4 elements eeraprse a plurality et palle/ye and a eemieeting leeltm u t .ha ehjeet et the ifarehtieh ie te. pre'lfide ite .p4 dt fiee Whieh may' harm a emwem ad realy attathI ment lor pulley hearings wherever the use elf smh a devise may he desirable; and one that shall he readily adjustable and se mrely heldin any' lgzesitlepet adjustment.

le further elijeet is te preride means for' correcting certain "tehdeiieies eeixseqaeht hperl 'aia uneven strelmhihg el? a helt er Where me edge portieri el? the belt is fer any reas-oli et greater elfeetire length than the Oppeslte edge lt :is a Well hae'wa fact, for example, that where pullejy'e are ar rahted eo that lthe helt is given a miarter; tarn, one edge ef the belt in opera-tien is suhjeette a greater tension than the other edge, which results :la a gradual etretehihg f' or lehethmiihe,r et that edge `perthei which subjected te the greater tehsieh. When.

this eeears the helt will tend te rim ytowenrd that eide of a crowned pulley which ismln jacent te the stretched edge Oli the "helt, se that fer eflieieney and safety of operation a necessary.

' The saaie uneven stretching is ale-e frequentl'y pbseiwahle in the ease eff helte that run apen parallel alined palle,rs partienlarly inthe ease of leather heltswhere frm the nature of the p'laterial une edge pertien more resistant thauthe ether, and this results in the sal'netendeney for the belt `te run toward one side ef the pulley.

.A ieadjustment et' thr` mllevs sach as above referred. to mest al anys he effected While the driven maehine is est el operathm, aad it .is lmnreover fi'erpzneatly ineen 'Veneht it not impossible te elleet ahy mw terial endwlse adgustment el: a driven Speeiheaten ei" Lettere Patent.

permet Patented New *a 1ere. serial No. eeaeee.

` pulley 0.a a machine shaft heeaase et the arrangement el the hearings. The ea-peer eht, mereever, is at best hutla. mal ee sihe it simply avoids seme el the eeuw rpieheesl et the mieren Stretching; elf the helt and dees not efeet en improvement ih the 'eohditeh el' the helt itself. Evert alter adjustment of thepulleye prieV edge eilljthe helt remains leer than the ,etheru se 'the frietiehel hold ef the belt speri pulleys rei'hailrsemaller than originally.,

sinee -the palleyeale est et their herhaal relative positie-ae the helt tends te rap. ereoliedly and the ellleieney of the' t. sienmeehanishi is consequently deereasedtu llt' the belt eentiiiuee 'te streteh, mereererf, repeated readjuetmeate et the pull required, thus emailing lncearepieaee'and less of time and at best failing te restere the mechanism to its tall former eilleiehejtz This invention. has as a further ehjeeh' therefore, the provision el simple and ready meene for 'correcting the 'above neted de feets frequentlyencountered in 'belt trepa mission hieehaaisat,V Without the heeeseittT et reerljaetiag the piilleye or stepping theV epe eration of the machine, and Vme'reerer te provide such means as will eer-reet the de feet at its source end resterethe ellieehey ef the helt itsellwith the pulleys retained inV their nermal effeetire pesitiens.

ln the aeeemplishmerlt @if the ehjleete abeveset forth, features of the ihrehtieh reside m a nevel forma of belt guide er tlghtener including a bracket shaped :the:

,ready and convenient attachment te pulley eapperting'bearings and having prerteiee. .for accurate adgustment Q n the hearings, aad means ler' holding the device eeearely sli place; and farther in; afiaevel arrapgerreht' of' mechanism with prevsmn for hed'lljy Vmevement of the dle-or belt tightening pulley to different positiensupon its supporting.: bracket for varying' thetensioa el" the belt end for clamping' the pulley electively in adjusted positionn A yfurther .featureresldes in means iter bringing a tilightening,r pressure to bear epee. that marginal portion of a belt Whph has become stretched. er lengthened with respect te the opposite edge portion, thereh-jy storing the helt to Aite. original er preper condition. with reference te the relative tean `siens of the eppesitevedges thereet'. Tale means, in its preferred ferm, comprises a the llll

'pulley eupper and an idle thereon with pim/*leien for angela? diese meet of the pulley iii .fill diste ions about *point en the axis oi' the peiley substaniiiellj/ iiiidwey between the opposite ends the. Willey, Se that one cflgfe el the belt may igliteiiefl, if desiree, Witheet tightening lie oi'ig'ioste edge, and the pulley may inclined et any angle found moet effective a) foi cor'ecziiig elle 'tendency ef iz-liebele te mm ee'ecl one side el die (l iren pulley.

r cmuleinallien with above feature the also includes piefeielgily pievieion for .ff tile idle pulley lioeily eo es io very rv I y es 'ed the tension oi' Il c beit es a Whole.

Ellie above :mii eiei' ee'mee of ille inventien iiiciuflng ceiiaifi leteiis of consti' *lotion .and combinations; of pei-'ts Wiil flow .be sleciibefl with reference to the eccempm'iying drawings and pointed out iii the* claims.

in the leanings, F'gm'e l a perspective 'f Showing the jjiieiei. l, eii'ibfiifliment oi.

. .e invention es :applied Lo power transmis mechanism used 1"1- driving e meeliin-e etrueiui'e shown.

@ediles owes' i,

The bese pie vi ed for! pulley vnoun"ced' with a third Contact point or edge in en i-ntemediete c il'eumlfeeniel position Wit-li fespect te the other two and spaced thereiff'om longitudinally ef the bearing. For g'eatei' sieiiility ef mounting the bracket 'fur'liei providel with en extension 32 end a contac peine 3e formeel tliei'een in posi- WLion to en;` `0 thel standard el. YWith' the cominci; points of the bi'aeliet 'accurately eeeteil 'noon the bearing and etaiiclei'l se es ilo rloci 'the device iii correct position with respect te the transmission mechanism ato which it 53o be. applied, bolts :1re employed to retain the. bracket Securely in piece. I v

The device `includes provision for adjust ment oi' the pulley 20 bodily Cowerd and ifi-em 'the-belt tlircixgb e swinging move# meut of the erm 2i upon the bracket 26. The bracket ie shaped to provide. a diskliie membe 3S, anni ville arm 24 isimouitefl to turn about im exis .substantially mi the ceniei of seid diei; and provided with n similarly :shipped` member 40. @ne ci these ieieion with ciel 'elle menicurely in *pesi in kovisioii of ne will xo possible 2o mim 9,4 so es te make slight viii itione in the eisioii of lle belli, lWhile the teeth will in eue positive retention of the erm in ed! jueted positieu. The comparatively .Wide eener; ion of the groupe of ieetii serves mulet fiiii, mie wie'e mettez beenfl elle consequeniee' iicy j t residiin tl ef 'L vo ogpeeed cilcizlei' ,ez'ies ci comrugzitioie *elle @eine 'time *elle Spacing of 'the groupe et equiflisam poiis; luwt the opposie 'ig' ci the membes and @C shrill loe meinminel iu subsi.: iiiilly pei'zillel relation. is.; ge poe'ieicii 'the perle); iiccemiely with ieepectte lie belli. Tfl/lili this mechanism 'it will be' evirleiwu tie-t iiiifozdei 'to lthe tension of the belt ee e, Whole ii; is only necloeeen sliglily the ool; -G,'sWing i io lie desired oeiiit of adjustment in igiiten ehe col. #he teeth inseeiiiicii of the i me iii lie preciee pesi-- Sweetion of in fee the device through the' l. Si

:Him ma, In audi am my im Wm, Mlm@ a; n, gm mn upm. the, dgfa man pmimmllily midway Yew 11S 'mum bel 'vemsml mayb Mmm fami,

im will mining, @Hmmm @umm-xy, and. a haelt the bewaring 3 Um Mw, 015km with its; three points im firm. cmsmck with th@ beaming, and am im@ puey Supymlted bythe bracket and arranged if columbia with #im hdi;

in power transmission mml'misnsm, the

` com'bmatimm. with :L puley stand md bearing, a pulay mmunted fm' Lumngmovement m smid bemrmg, a second p Lilley, :md a belt conk .nectmg Saud pulleys., of a bracket hzwmg con" 'tmb with said bem-311g at a plurality of points :md als@ having; contant. point on th@ Stand, c'mnring `mamas having provisiwm im ad* justment `0f tlm bracket to briflg the savm'al pnts im@ mmm, Wim Mm bem ing and, ammi, mldm idle will@ suppotcd bythe bxfmzketzmd m'wnged to `einnimmt with 111m bam Y "il IM,

combination with pulleys:A and a connecting belt.l of :1 bell; :':djusring device comprising a. Supporting' lnfarlfet an arm mounted. io turn upon said bracket to diiierent positions oi: adjustment;and a bel tig'liieuing pulley carried by said arm. .said brazfie boing formed 23o present opposed eontae; .members one-oiA u'liirli is provided with a,

vplurality of teeth or rorrng'ations arranged in a continuous circular series, said other member ha ring :i piuraliy of "separated ifi-oups of teeth arranged for engaging said ieeh on the irsl: named member in (.lilierent positions of adjustment oli said arm.

si. in power transmission mechanismj the combination with pulleys and a coniiecting beloof a belil adjusting device comprising ay supportiorr bracket, an arm inouned io turn upon'said bracket lo different positions 'of adjustment', a belt tightening pulleyv carried by said arin, said braeke'fandarin beingl formed to present opposed conact members one oil' which is provided wilra plurality of teeth or rorririations arranged in circular scri is about 1he axisvof turning; movrnieli ol Sai arm, .said other member lia'i'inif means i'or cngrafcing said teeth at three or more looaiions syinxnericaily spared apar' aboui` said axis al relatively iride intervals, and moans or clamping' said members oorl'hcr -in adjusted posiiioo.

,in power transmission nwrlianisin, the combmailon,wlh pulleys and a connecting bolt oll which one edge portion is o' grenier lengil'h lian 'rho other rdge poriion, ol incarne urranged Lo brar upon said loog i portion oi the bolt to io'hen said poi-'Lion willionc ai'rring niaerially the "o., ion oi? fila opposil'e edge or' libe heli, so as to correos the iendenry 'f the belt to run nini-,verily upon ihn pulley-fs. v

(3. in power ransmission mechanism, he cmnbinaiion ivilh'iiuliejks and a connecting' boli@7 of means :for "Lipunishing elle bell as :iv whole, said means being construeoiai and arranoed also for rarying the iiension o one edge p-orrion oi: the l with rcspecr to hat ol `lie other edge porio" T. inpower ransmisaion ine-ehonisin, the combination with zransniission pu n l connecting; hele, of :1 heli: tightening 'pulley arranged to Contact wih belt :ind affiner able to increase the tension of one f ige por.L io-n of ille 'belt nziihouz i creasing 'he tension of the oher edge portion.

8. in power transmission mechanism, the combine/eine with trzmsinission pulleys and 'a eoifineeing heliK of an idie pulley inouned in position Contact wili elle heltand adjustable in a plane transverse to the line of i-he belt abone axis extending ai; angle to 'the axis aboa; which the prilleu retires anni located behoren iie oncle orine pulley.

ln power iransmission n3,cnanisi'nj @he and a rin combination with transmission pnlleysand a connecting bell', of an idle pulley mounted :in position to Contact with the belt and adjustable bodily to 'vary the tension of the bell; :is a whole, said 'pulley being edjusta fiar belt running; on said pulleys. of belt adjusting' means comprising a pulleysupport). a beltv adjusting pulley, and a pulley' cariyingI spindle having ax universal hearing. upon said support, said bearing being formed lo provide for adjustmentof the pulley angularly about a point on its axis .located between the ends of the pulley and in planes transverse to the line of 'if-he belt to vary the rrlatire tensions of opposiceedge portions of the bella.l

il. lo power transmission' mechanism, boli adjusting means comprising` a. pulley support having; i'orraed therein an opening which enlargies progressively from one end to the oher thereof, a hearing' member havine; an extension projecting within Said opening. all portions oi said extension within the opening' being' small-er in cross' see'- lion than the opening' ro permit the extension lo la: swung* from side to side 'lio effect angular .':ol'iusrnuni of the bearing member, an idle pulley mounted on said l earingine1fnber adjacent to the narrower end or" said opening'. and. means for securingsaid bear--A ing member and extension in diilereni'; posi lione'- oi` angular :nljosinenr-wich respect to said euppori".

in power trrmsi'nission mechanisnnhelt adliusing means comprising a pulley su`p port having a subsianially sraighl: openingij 1formed iiierein, a bearing member'haying an exliension projecting Within said opening. and an idle pulley inounied on said bearing' meunier adiacent to said opening,

the walls of said opening being ofsuhsbanialiy conical formation converging in the direction of said pulley to permit said extension to be swung in :my direction Within the ooeninU fo effect anfular ad`ustme1it i e s:

angularly with respect to said support to effect angular adjustment of the pulley.

ll.. VIn power transmission mechanism, holt adjusting lne-ans comprising a pulley support Shaped to provide aholclei with an. opening tlieretlumigll 'which enlarges 'progressively lroni one end to the othei` thereof, a pulley hearing lnenihel' havingl an extension pxfojeeting through the opi-ming in saiil holder from the sniallezI nml thereof and adjustable angulalfly thm-ein, saill hearing member boing p lovinleel with :1 cap with a oonvexly uni-vcd fave seated upon the holder at the smaller eml of said opening, a second cap having' a concave face seated upon the hohlei' at thv lai-glei' mill ol sail'l opi-ningv and through whioh ,aaiil hearing extension {nfo- .loi'thz aguil a pilllov mounted on Haiil hearing1 molnhor7 saiil [ial'ls living shapwl to provide foi' :nljuatniont ol tho pulley angnlarly about a point on its axis substantially midway lmtwoon the mills of the pulley,

l5. ln power tlansniissiox'i nieohaniam,

'provided belt adjusting means comprising a pulley support shaped to provide 'a holder suhstantia-lly in the form of ahollow cone open at both ends, a` pulley hearing member having an extension projecting through the opening in said holrler and adj ustaole angulaz'ly therein, said hearing member being with a cap seated upon the nuri-ower euml ol 'the holder, an idle pulley mounted on :sa 'nl hea ring adjacent to said cap, a cap having a concave face seated upon the wider euml of saicl holder and provided with an opening through which Said bearing 0X* tension projects, and means engaging said last named cap :unl the extension for scono ingA the hearing vin aillinstenl poaitimi.

Vln testimony whereof l havey Signeil my llamo to the .apovilioation in tho presence olf two subscribing nit-1105308.

- R( )NALD l". MCFIELY.

l'litnesaoa (llms'rnlz if'. ROGERS,

LAURA M. Goonnnon.

It. is hambxr certified thnt in Letters PatentJ No. 1,204,371, granted November 7, 1916, ilpon tho application of Ronald I"4 McFcel y, of Beverly, Massachusetts, .for nn improvement in rltlContmlling Dcvhzes," errors apparu* in 'the printed specifica.- tion requiring correction as follows: Page 4, line 105), claim I3, for the words` srubstantially straight" read an; sume page and claim, line 111, for th article "r.n rrad a substantially straight; and that thc said Letters Patent should be rend with tliese corrections therein that the same may conform t() the record of the case in tho Patent Office.

Signed :tml sealed this 30th dayof January, A. D., 1917.

F. W. Il. CLAY.

Acting Commissioner of Patents.

[SEALJ 

